<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div id="msg"></div>
<hr/>
<div id="msg1"></div>
<script type="module">
  import { createApp } from 'https://unpkg.com/vue@3/dist/vue.esm-browser.js'
  import MyComponent from './my-component.js'
  createApp(MyComponent).mount('#msg')
  createApp(MyComponent).mount('#msg1')

</script>

</body>
</html>